21043278

素因数分解:

$2^1\times 3^2\times {\mathrm{491}}^1\times {\mathrm{2381}}^1$

素因数の和:2880

約数の個数: 24

約数和(自身を含む): 45705816

約数和(自身を除く): 24662538

約数列:

[1, 2, 3, 6, 9, 18, 491, 982, 1473, 2381, 2946, 4419, 4762, 7143, 8838, 14286, 21429, 42858, 1169071, 2338142, 3507213, 7014426, 10521639, 21043278]

約数ペア:

[(1, 21043278), (2, 10521639), (3, 7014426), (6, 3507213), (9, 2338142), (18, 1169071), (491, 42858), (982, 21429), (1473, 14286), (2381, 8838), (2946, 7143), (4419, 4762)]